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Porsche > Engine Rebuild Parts > Oil System Parts > Oil Pipes & Hoses >

Air Hose 15 x 24 Inlet Manifold to Vacuum Limiter. Sold by the Meter. Porsche 911 turbo / 924 turbo  ❭  99923900740

Air Hose 15 x 24 Inlet Manifold to Vacuum Limiter. Sold by the Meter. Porsche 911 turbo / 924 turbo - 99923900740 - PSU15
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Product Information
Product Information

Manifold to Vacuum Limiter Air Hose  – 15 x 24mm
Sold by the metre

High-quality manifold to vacuum limiter air hose designed for Porsche 911 Turbo, 964 Turbo, and 924 Turbo models, supplied per metre for precise fitment and flexible installation.

Fits:

  • Porsche 911 1975-1977 3.0L Turbo (930)
  • Porsche 911 1978-1989 3.3L Turbo (930)
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93
  • Porsche 924 Turbo 2.0L 1979-81
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GT 2.0L 1981
  • Porsche 924 Carrera GTS 2.0L 1982

Diagram ref no 39  

This hose connects the intake manifold to the vacuum limiter, playing a critical role in regulating vacuum pressure within the turbo system. Proper vacuum control is essential for maintaining boost stability, engine efficiency, and overall drivability in turbocharged Porsche engines.

Manufactured to OEM specifications, this hose ensures durability, flexibility, and resistance to heat and pressure, making it ideal for maintenance, repair, or restoration of Porsche turbo vacuum systems.

Key Features

• Manifold to vacuum limiter hose
• Suitable for Porsche 911 Turbo, 964 Turbo, and 924 Turbo
• Part number 99923900740
• Designed for turbo vacuum and boost control systems
• Sold per metre for custom length applications
• Resistant to heat and pressure
• Flexible and durable construction
• OEM-style fit and performance

Function and Purpose

This hose is a vital component within the turbo vacuum system.

It helps to:
• Connect intake manifold to vacuum limiter
• Regulate vacuum pressure within the turbo system
• Support boost control and engine stability
• Prevent vacuum leaks affecting performance
• Ensure efficient turbocharger operation

Why Replace Vacuum Hoses

Turbo vacuum hoses operate under demanding conditions.

Common issues include:
• Cracking or splitting
• Vacuum leaks reducing boost control
• Hardening and reduced flexibility
• Inconsistent engine performance

Replacing worn hoses restores proper vacuum regulation and engine efficiency.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99923900740
99923900740

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